"Microsoft.. long and proud history of totally screwing up usability on very good software. "
It's a territory thing.
When a predator invades new territory it likes to mark the area with it's scent.
Often by defecating all over the area.
So when MS gets its corporate mitts on a company it feels the instinctive urge to "improve" it.
Long term users of software that's been bought by MS (that's not been folded into existing MS stuff) can decide for themselves wheather they think those products were "improved."